const fp = require('lodash/fp')
// 数据
// horsepower 马力， dollar_value 价格， in_stock 库存
const cars = [
    { name: 'Ferrari FF', horsepower: 660, dollar_value: 700000, in_stock: true},
    { name: 'Spyker C12 Zageto', horsepower: 650, dollar_value: 648000, in_stock: true},
    { name: 'Jaguar XKR-S', horsepower: 550, dollar_value: 132000, in_stock: true},
    { name: 'Audi R8', horsepower: 525, dollar_value: 114200, in_stock: true},
    { name: 'Aston Martin One-77', horsepower: 750, dollar_value: 185000, in_stock: true},
    { name: 'Pagani Huayra', horsepower: 700, dollar_value: 1300000, in_stock: true},
]

// 4.使用flowRight 写一个SanitizeNames() 函数，返回一个下划线连接的小写字符串， 把数组中的name转换为这种形式

let _underscore = fp.replace(/\W+/g, '_')

//函数组合
//let sanitizeNames = fp.flowRight(fp.map(_underscore), fp.map(fp.toLower), fp.map(fp.prop('name')))
//函数组合及结合律
let sanitizeNames = fp.flowRight(fp.map(fp.flowRight(_underscore, fp.toLower, fp.prop('name'))))

console.log(sanitizeNames(cars));